<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>mtlb_cumprod</title>
  </head>
  <body bgcolor="#FFFFFF">
    <center>M2SCI function</center>
    <div align="right">Last update : 30/03/2004</div>
    <p>
      <b>mtlb_cumprod</b> - Matlab cumprod emulation function</p>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>Matlab and Scilab <tt>
        <b>cumprod</b>
      </tt> behave differently in some particular cases:</p>
    <dl>
      <dd>
        <b></b>
        <dd>
          <li>
            <b>
              <font color="maroon"></font>
            </b>
	When used with one input (<tt>
              <b>cumprod(A)</b>
            </tt>), Matlab <tt>
              <b>cumprod</b>
            </tt>
	treats the values along the first non-singleton dimension of A as vectors while
	Scilab <tt>
              <b>cumprod</b>
            </tt> treats all A values.
        </li>
          <li>
            <b>
              <font color="maroon"></font>
            </b>
	When used with two inputs (<tt>
              <b>cumprod(A,dim)</b>
            </tt>), Matlab tolerates <tt>
              <b>dim</b>
            </tt>
	to be greater than the number of dimensions of A while Scilab returns an error message in this case.
        </li>
        </dd>
      </dd>
    </dl>
    <p>    
    The function <tt>
        <b>R = mtlb_cumprod(A[,dim])</b>
      </tt> is used by
    <tt>
        <b>mfile2sci</b>
      </tt> to replace <tt>
        <b>cumprod(A[,dim])</b>
      </tt> when it was not
    possible to know what were the inputs while porting Matlab code to Scilab. This function will
    determine the correct semantic at run time. If you want to have a
    more efficient code it is possible to replace <tt>
        <b>mtlb_cumprod</b>
      </tt> calls:
    </p>
    <dl>
      <dd>
        <b></b>
        <dd>
          <li>
            <b>
              <font color="maroon"></font>
            </b>
	If <tt>
              <b>dim</b>
            </tt> is less equal to the number of dimensions of A
	<tt>
              <b>R = mtlb_cumprod(A,dim)</b>
            </tt> may be replaced by <tt>
              <b>R = cumprod(A,dim)</b>
            </tt>
          </li>
          <li>
            <b>
              <font color="maroon"></font>
            </b>
	If <tt>
              <b>dim</b>
            </tt> is greater than then number of dimensions of A
	<tt>
              <b>R = mtlb_cumprod(A,dim)</b>
            </tt> may be replaced by <tt>
              <b>R = A</b>
            </tt>.
        </li>
        </dd>
      </dd>
    </dl>
    <p>Caution: <tt>
        <b>mtlb_cumprod</b>
      </tt> has not to be used for hand coded functions.</p>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="firstnonsingleton.htm">
        <tt>
          <b>firstnonsingleton</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
    <h3>
      <font color="blue">Authors</font>
    </h3>
    <dl>
      <dd>
        <b></b>V.C.</dd>
    </dl>
  </body>
</html>
